using AcDream.App.UI;
using AcDream.UI.Abstractions.Panels.Settings;

namespace AcDream.App.Tests.UI;

public sealed class RetailWindowLayoutPersistenceTests : IDisposable
{
    private readonly string _directory = Path.Combine(
        Path.GetTempPath(), "acdream-window-layout-tests-" + Guid.NewGuid().ToString("N"));
    private string PathName => Path.Combine(_directory, "settings.json");

    [Fact]
    public void CompletedInteractions_SaveCompleteCharacterResolutionLayout()
    {
        var store = new SettingsStore(PathName);
        var root = new UiRoot { Width = 800, Height = 600 };
        RetailWindowHandle handle = Mount(root, "chat");
        using var persistence = new RetailWindowLayoutPersistence(
            root.WindowManager, store, () => "Alice", () => (800, 600));

        handle.MoveTo(44f, 55f);
        handle.ResizeTo(320f, 180f);
        handle.Hide();

        UiWindowLayout saved = Assert.IsType<UiWindowLayout>(
            store.LoadWindowLayout("Alice", "800x600", "chat", default));
        Assert.Equal((44f, 55f, 320f, 180f), (saved.X, saved.Y, saved.Width, saved.Height));
        Assert.False(saved.Visible);
    }

    [Fact]
    public void Restore_ClampsBoundsAndReappliesPanelStateAndVisibility()
    {
        var store = new SettingsStore(PathName);
        store.SaveWindowLayout(
            "Alice",
            "640x480",
            "chat",
            new UiWindowLayout(900f, 700f, 500f, 300f, false, false, true));

        var root = new UiRoot { Width = 640, Height = 480 };
        var state = new FakeWindowState();
        RetailWindowHandle handle = Mount(root, "chat", state);
        using var persistence = new RetailWindowLayoutPersistence(
            root.WindowManager, store, () => "Alice", () => (640, 480));

        persistence.RestoreAll();

        Assert.Equal((500f, 300f), (handle.Width, handle.Height));
        Assert.Equal((140f, 180f), (handle.Left, handle.Top));
        Assert.False(handle.IsVisible);
        Assert.True(state.Restored.Maximized);
    }

    [Fact]
    public void DefaultPreLoginKey_NeverOverwritesCharacterLayouts()
    {
        var store = new SettingsStore(PathName);
        var root = new UiRoot { Width = 800, Height = 600 };
        RetailWindowHandle handle = Mount(root, "radar");
        using var persistence = new RetailWindowLayoutPersistence(
            root.WindowManager, store, () => "default", () => (800, 600));

        handle.MoveTo(123f, 234f);

        Assert.Null(store.LoadWindowLayout("default", "800x600", "radar", default));
    }

    [Fact]
    public void Restore_StateManagedWindow_PreservesAuthoritativeVisibility()
    {
        var store = new SettingsStore(PathName);
        store.SaveWindowLayout(
            "Alice",
            "800x600",
            "combat",
            new UiWindowLayout(44f, 55f, 200f, 100f, true, false, false));

        var root = new UiRoot { Width = 800, Height = 600 };
        RetailWindowHandle handle = Mount(root, "combat");
        handle.Hide();
        using var persistence = new RetailWindowLayoutPersistence(
            root.WindowManager,
            store,
            () => "Alice",
            () => (800, 600),
            stateManagedVisibilityWindows: ["combat"]);

        persistence.RestoreAll();

        Assert.Equal((44f, 55f), (handle.Left, handle.Top));
        Assert.False(handle.IsVisible);

        // Combat mode owns subsequent show/hide transitions as well; they must
        // not turn into saved user visibility preferences.
        handle.Show();
        UiWindowLayout saved = Assert.IsType<UiWindowLayout>(
            store.LoadWindowLayout("Alice", "800x600", "combat", default));
        Assert.False(saved.Visible);
    }

    [Fact]
    public void NamedProfile_SaveAndRestore_AppliesEveryMountedWindow()
    {
        var store = new SettingsStore(PathName);
        var root = new UiRoot { Width = 800, Height = 600 };
        RetailWindowHandle chat = Mount(root, "chat");
        RetailWindowHandle radar = Mount(root, "radar");
        using var persistence = new RetailWindowLayoutPersistence(
            root.WindowManager, store, () => "Alice", () => (800, 600));

        chat.MoveTo(44f, 55f);
        radar.MoveTo(300f, 120f);
        radar.Hide();
        persistence.SaveNamed("hunting");

        chat.MoveTo(1f, 2f);
        radar.MoveTo(3f, 4f);
        radar.Show();
        persistence.RestoreNamed("hunting");

        Assert.Equal((44f, 55f), (chat.Left, chat.Top));
        Assert.Equal((300f, 120f), (radar.Left, radar.Top));
        Assert.False(radar.IsVisible);
    }

    private static RetailWindowHandle Mount(
        UiRoot root,
        string name,
        IRetainedWindowStateController? state = null)
    {
        var frame = new UiPanel
        {
            Left = 10f,
            Top = 20f,
            Width = 200f,
            Height = 100f,
            MinWidth = 100f,
            MinHeight = 80f,
            MaxWidth = 600f,
            MaxHeight = 400f,
            Draggable = true,
            Resizable = true,
        };
        root.AddChild(frame);
        return root.RegisterWindow(name, frame, stateController: state);
    }

    public void Dispose()
    {
        if (Directory.Exists(_directory)) Directory.Delete(_directory, recursive: true);
    }

    private sealed class FakeWindowState : IRetainedWindowStateController
    {
        public RetainedWindowState Restored { get; private set; }
        public RetainedWindowState CaptureWindowState() => Restored;
        public void RestoreWindowState(RetainedWindowState state) => Restored = state;
    }
}